import json
import pygal_maps_world.maps
from c16.country_codes import get_country_code
from pygal.style import RotateStyle
from pygal.style import LightColorizedStyle

filename = 'resouce/population_data.json'
with open(filename) as f:
    pop_data = json.load(f)

cc_populations = {}
# 打印每个国家2010年的人口总量
for pop_dict in pop_data:
    if pop_dict['Year'] == '2010':
        country_name = pop_dict['Country Name']
        population = int(float(pop_dict['Value']))
        code = get_country_code(country_name)
        if code:
            cc_populations[code] = population
        else:
            print("Error-"+country_name)

# 根据人口数量将所有国家分为三组
cc_pops_1, cc_pops_2, cc_pops_3 = {}, {}, {}
for cc, pop in cc_populations.items():
    if pop < 10000000:
        cc_pops_1[cc] = pop
    elif pop < 1000000000:
        cc_pops_2[cc] = pop
    else:
        cc_pops_3[cc] = pop

# 看看每组分别包含多少国家
print(len(cc_pops_1),len(cc_pops_2),len(cc_pops_3))


wm_style = RotateStyle('#336699',base_style=LightColorizedStyle)
wm = pygal_maps_world.maps.World(style=wm_style)
wm.title = 'World Population in 2010, by Country'
wm.add('0-10m',cc_pops_1)
wm.add('10m-1bn',cc_pops_2)
wm.add('>1bn',cc_pops_3)
wm.render_to_file('world_pupulation.svg')
